(a)[3]
Explain how an alternating current in the primary coil leads to an alternating output voltage.
(b(i))[1]
Suggest why this voltmeter does not give a reading for the output voltage when the input voltage is $6.4\,\text{V}$.
(b(ii))[2]
The primary coil has $48$ turns. Calculate the number of turns on the secondary coil.
(c(i))[1]
On Fig. 7.2, sketch a trace showing an alternating output voltage on the screen.
(c(ii))[2]
Describe how the trace can be used to determine the maximum value of the output voltage.